Ventilator



FIG. 1 is a perspective view of the ventilator embodying our design;

FIG. 2 is a top plan view thereof;

FIG. 3 is an elevational view taken from one side thereof, the opposite side being a mirror image of the side shown;

FIG. 4 is an elevational view taken from one end thereof, the opposite end being a mirror image of the end shown; and

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a ventilator, as shown and described. 